An SD40-2 leads a mixed freight down the Columbus Subdivision, passing through the old C&O signal bridge at Cabin SA in Upper Sandusky, Ohio. A shiny cantilever with sideways turned heads was standing several yards behind me. Now, the new signals are guiding trains and the only thing left of the signal bridge is a couple concrete bases. This is one boring piece of railroad now...

The EMD SD (special duty) series are a strong and reliable kind of locomotive which still serve America's rails today. They have proved themselves by clocking in several million miles of freight service.